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Message: <blockquote data-quote="Greenfield" data-source="post: 6222043" data-attributes="member: 6669384">I'm sad to say that I just won a bet with myself.  In fact I should have lost two of them  I didn't think anyone would seriously argue the weight of the air in the bag.  Air must be really heavy someplace in the world. <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile    :)"  data-smilie="1"data-shortname=":)" />Tell me, how hard do you have to push, in your game, to force something through the opening of a Bag of Holding?  How much resistance does that dimensional barrier offer?  Figure that water, facing that same resistance, has to push just as hard.  That seem fair?With that comparison in mind, is there still an argument over whether water will enter an open container that's immersed?  (Cringingly, I'm pretty sure I know the answer to that question.)I do have to admit that I made a mistake in my answers, though.  Since I presume a variable internal size, up to the maximum volume, holding a bag upside down under water and opening it wouldn't work.  Water would still go inside.  It doesn't need to displace the air if the bag can expand its internal volume to accommodate.  (Try it:  Take a piece of plastic pipe and rubber-band a deflated plastic bag around one end.  Shove the other end into water.  The bag will inflate with air from the tube, and water will come in just fine.) Now, obviously not everyone uses my "Spandex" model.  But since it is my model, I'll be consistent and admit my mistake.By extension, the diving bell trick won't work either.  The bag will fill with water and rupture when you try.As for the idea that a bag will resist overfilling:  On volume, that makes sense.  Any bag would.  Weight wise, I'm not seeing the mechanism of the resistance.  I mean, I don't see the clerk at the grocery store having the slightest problem when he overloads my shopping bags.</blockquote>

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